rollup merge of #19966: steveklabnik/remove_l10n

@brson suggested that I remove this stuff in https://github.com/rust-lang/rust/pull/19897/files#r22014810, but it seems more appropriate to do separate from that.

Author: alexcrichton

mk/docs.mk

@@ -216,36 +216,6 @@ endef
 $(foreach docname,$(DOCS),$(eval $(call DEF_DOC,$(docname))))
 
 
-# Localized documentation
-
-# FIXME: I (huonw) haven't actually been able to test properly, since
-# e.g. (by default) I'm doing an out-of-tree build (#12763), but even
-# adjusting for that, the files are too old(?) and are rejected by
-# po4a.
-#
-# As such, I've attempted to get it working as much as possible (and
-# switching from pandoc to rustdoc), but preserving the old behaviour
-# (e.g. only running on the guide)
-.PHONY: l10n-mds
-l10n-mds: $(D)/po4a.conf \
-		$(foreach lang,$(L10N_LANG),$(D)/po/$(lang)/*.md.po)
-	$(warning WARNING: localized documentation is experimental)
-	po4a --copyright-holder="The Rust Project Developers" \
-		--package-name="Rust" \
-		--package-version="$(CFG_RELEASE)" \
-		-M UTF-8 -L UTF-8 \
-		$(D)/po4a.conf
-
-define DEF_L10N_DOC
-DOC_L10N_TARGETS += doc/l10n/$(1)/$(2).html
-doc/l10n/$(1)/$(2).html: l10n-mds $$(HTML_DEPS) $$(RUSTDOC_DEPS_$(2))
-	@$$(call E, rustdoc: $$@)
-	$$(RUSTDOC) $$(RUSTDOC_HTML_OPTS) $$(RUSTDOC_FLAGS_$(1)) doc/l10n/$(1)/$(2).md
-endef
-
-$(foreach lang,$(L10N_LANGS),$(eval $(call DEF_L10N_DOC,$(lang),guide)))
-
-
 ######################################################################
 # Rustdoc (libstd/extra)
 ######################################################################
@@ -294,7 +264,3 @@ endif
 
 docs: $(DOC_TARGETS)
 compiler-docs: $(COMPILER_DOC_TARGETS)
-
-docs-l10n: $(DOC_L10N_TARGETS)
-
-.PHONY: docs-l10n

src/doc/README.md

@@ -6,12 +6,6 @@
 document converter, is required to generate docs as HTML from Rust's
 source code.
 
-[po4a](http://po4a.alioth.debian.org/) is required for generating translated
-docs from the master (English) docs.
-
-[GNU gettext](http://www.gnu.org/software/gettext/) is required for managing
-the translation data.
-
 ## Building
 
 To generate all the docs, just run `make docs` from the root of the repository.
@@ -44,43 +38,3 @@ The syntax for pandoc flavored markdown can be found at:
 A nice quick reference (for non-pandoc markdown) is at:
 
 - http://kramdown.gettalong.org/quickref.html
-
-## Notes for translators
-
-Notice: The procedure described below is a work in progress. We are working on
-translation system but the procedure contains some manual operations for now.
-
-To start the translation for a new language, see `po4a.conf` at first.
-
-To generate `.pot` and `.po` files, do something like:
-
-~~~~
-po4a --copyright-holder="The Rust Project Developers" \
-    --package-name="Rust" \
-    --package-version="0.13.0" \
-    -M UTF-8 -L UTF-8 \
-    src/doc/po4a.conf
-~~~~
-
-(the version number must be changed if it is not `0.13.0` now.)
-
-Now you can translate documents with `.po` files, commonly used with gettext. If
-you are not familiar with gettext-based translation, please read the online
-manual linked from http://www.gnu.org/software/gettext/ . We use UTF-8 as the
-file encoding of `.po` files.
-
-When you want to make a commit, do the command below before staging your
-change:
-
-~~~~
-for f in src/doc/po/**/*.po; do
-    msgattrib --translated $f -o $f.strip
-    if [ -e $f.strip ]; then
-       mv $f.strip $f
-    else
-       rm $f
-    fi
-done
-~~~~
-
-This removes untranslated entries from `.po` files to save disk space.